Linksys RTP300 User Guide - Page 45

Configuring Voice Services Using a FAX Machine (SPA2102, SPA3102 or SPA8000) • G.729a • G.723 WRP400 • G.711u (configured by default) • G.711a • G.726-32 • G.729a Using a FAX Machine (SPA2102, SPA3102 or SPA8000) NOTE: T.38 Fax is only supported on the SPA2102, SPA3102, and the SPA8000. The SPA2102 and SPA3102 support a single connection, while the SPA8000 supports one connection for each pair of ports (1/2, 3/4, 5/6, and 7/8) for a maximum of four connections. To optimize fax completion rates, complete the following steps: 1. Upgrade the Linksys ATA firmware to the latest version 2. Ensure that you have enough bandwidth for uplink and downlink. • For G.711 fallback, it is recommend to have approximately 100Kbps. • For T.38, allocate at least 50 kbps. 3. To optimize G.711 fallback fax completion rates, set the following on the Line tab of your Linksys ATA device: • Network Jitter Buffer: very high • Jitter buffer adjustment: disable • Call Waiting: no • 3 Way Calling: no • Echo Canceller: no • Silence suppression: no • Preferred Codec: G.711 • Use pref. codec only: yes Linksys ATA Administration Guide 45